Home » Central Heat Pump GREE Montréal, Laval, Longueuil, South Shore, North Shore
AirGreenGREE
GREE EliteThe GREE space at AirGreen · Central heat pumpsGREE Elite dealer: GREE training completed, priority access to original parts.
GREE Elite
Cold-climate certified R-32 · R-410A while stocks last
GREE central heat pumps · 2 to 5 tons · Updated Oct. 27, 2026

GREE central heat pumps. Three R-32 model families, four tonnages. What each keeps of its heat at −15 °C and −30 °C, certificate in hand.

20 GREE central systems, from 2 to 5 tons. For a house that already has ducts, or is replacing its furnace: one unit outside, one air handler pushing air through the whole duct system. On R-32, this page brings together three GREE model families at the same tonnages; their certificates look alike without being identical. Pick the tonnage, then compare.

Compare a tonnageThe five linesBook my free estimate
12 of 12R-32 systems on this page that ENERGY STAR lists as “cold climate” and “Most Efficient”, in all three model families. The R-410A systems’ AHRI numbers appear on none of these lists.
72% → 50%Share of the 8.3 °C rating NEEP still certifies at −30 °C, from the 2-ton to the 5-ton. The bigger the system, the larger the share lost in deep cold.
3 familiesFXU, GUD with an E air handler, GUD with a G air handler: same tonnages, separate certificates. They part ways at 2 tons (−15 °C), at 3 tons (−8.3 °C) and at 4 and 5 tons (COP).
  • 20systems on this page
  • 12/20ENERGY STAR cold-climate certified, by AHRI number
  • 2–5tons
  • 12LogisVert amounts matching the Oct. 27, 2026 list
AirGreen × GREEGREE Elite dealerThree R-32 families, four tonnagesCertified heat down to −30 °C136 GREE central systems on our installations blogMontréal, Laval, Longueuil, South Shore, North Shore
The tonnage selector

One tonnage, three certificates. See where they part ways.

At each tonnage, this page offers three GREE R-32 systems with different model numbers. Their heat at −30 °C is identical; the gap, when there is one, fits in one or two lines per size. Here they are, backed by the certificates.

Pick a tonnage.

The three GREE R-32 model families side by side: FXU (GREE Comfort’s FLEXX ULTRA R32), GUD with an E air handler (the FLEXX R32 Dettson describes) and GUD with a G air handler (GREE Canada’s UNIX R32). In bold: what changes from one family to the next.

Capacities in BTU/h published by NEEP for each AHRI number, read Oct. 26, 2026; ENERGY STAR dates and designations; amounts from Hydro-Québec’s Oct. 27, 2026 list, indicative.

FXU pageGUD + E pageUNIX R32 pageAdd-on to a furnace
The central lines

Five central lines: three on R-32, two on R-410A.

Each card sums up its family’s systems on this page: coldest point catalogued by NEEP, maximums at −15 °C and −8 °C, ENERGY STAR and LogisVert. The three R-32 families show the same maximums; the tonnage selector above shows what sets them apart.

R-32Current generation

FLEXX ULTRA R32 · FXU

FXU24HP230V1R32AO, FXU36HP230V1R32AO, FXU48HP230V1R32AO, FXU60HP230V1R32AO

  • −30 °Clowest point catalogued by NEEP
  • 54,000max. BTU/h at −15 °C (NEEP)
  • 47,300max. BTU/h at −8 °C (NEEP)

24,000 to 60,000 BTU/h · 4 systems

ENERGY STAR cold climate for every system

LogisVert up to $5,400 indicative

One outdoor unit per tonnage, FXU24 to FXU60. Its 2-ton is the only one of this page’s three 2-ton systems that keeps its full 8.3 °C rating at −15 °C.

Documentation: GREE Comfort; French manuals posted by TTI Climatisation

FXU pageFXA coil
R-32Current generation

FLEXX R32 · GUD + E

GUD36W2/NHE-D(U), GUD60W2/NHE-D(U)

  • −30 °Clowest point catalogued by NEEP
  • 54,000max. BTU/h at −15 °C (NEEP)
  • 47,300max. BTU/h at −8 °C (NEEP)

24,000 to 60,000 BTU/h · 4 systems

ENERGY STAR cold climate for every system

LogisVert up to $5,400 indicative

GUD36W2 and GUD60W2 outdoor units with an E air handler. Warranty printed by Dettson: 10 years parts and compressor, labour not included, plus 2 years under conditions.

Documentation: Dettson, product page and sheet X61067C

GUD + E pageGCAC coil
R-32Current generation

UNIX R32 · GUD + G

GUD36W2/NhE-D(U), GUD60W2/NhE-D(U)

  • −30 °Clowest point catalogued by NEEP
  • 54,000max. BTU/h at −15 °C (NEEP)
  • 47,300max. BTU/h at −8 °C (NEEP)

24,000 to 60,000 BTU/h · 4 systems

ENERGY STAR cold climate for every system

LogisVert up to $5,400 indicative

Same GUD outdoor units, G air handler. Its 3-ton is rated 32,600 BTU/h at −8.3 °C: $3,912 on the LogisVert list.

Documentation: GREE Canada, brochure 062025

UNIX R32 pageGCAC coil
R-410APrevious generation · while stocks last

FLEXX R-410A

FLEXX36HP230V1AO, FLEXX60HP230V1AO

  • nonelowest point catalogued by NEEP
  • nonemax. BTU/h at −15 °C (NEEP)
  • nonemax. BTU/h at −8 °C (NEEP)

24,000 to 60,000 BTU/h · 4 systems

No ENERGY STAR record found for these AHRI numbers

Previous generation, 2 to 5 tons. Its AHRI numbers appear neither on NEEP, nor at ENERGY STAR, nor on the LogisVert list: no certified heat and no amount shown.

Documentation: airgreen.ca product sheets only

FLEXX R-410A page
R-410APrevious generation · while stocks last

UNIX R-410A

GUD36W/A-D(U), GUD60W/A-D(U)

  • nonelowest point catalogued by NEEP
  • nonemax. BTU/h at −15 °C (NEEP)
  • nonemax. BTU/h at −8 °C (NEEP)

24,000 to 60,000 BTU/h · 4 systems

No ENERGY STAR record found for these AHRI numbers

Previous generation, GUD36W and GUD60W outdoor units. Like the FLEXX R-410A, no certified value to show.

Documentation: airgreen.ca product sheets only

UNIX R-410A page

The R-410A cards show no certified value: their AHRI numbers are on none of the three lists. Each family has its own page, linked at the bottom of its card.

The R-410A systems

Eight R-410A systems, sold while stocks last, with no certified value to show.

The previous-generation FLEXX and UNIX systems stay on this page. We looked up their AHRI numbers on the three lists that matter; here is what we found.

FamilyStatusWhat this page shows
FXU, GUD + E, GUD + GR-32 systems, 2 to 5 tons
On all three lists
NEEP, ENERGY STAR and the Oct. 27, 2026 LogisVert list: certified heat and an amount shown for every system.
FLEXX R-410AFLEXX36HP230V1AO, FLEXX60HP230V1AO
On none of the three lists
The AHRI numbers on our product sheets appear neither on NEEP, nor at ENERGY STAR, nor on Hydro-Québec’s list: no certified value, no amount.
UNIX R-410AGUD36W/A-D(U), GUD60W/A-D(U)
On none of the three lists
Same result for its four numbers. The exact pairing and its certificate are confirmed in the quote.

LogisVert is Hydro-Québec’s current program for this equipment; applications to the Canada Greener Homes Grant ended on Sept. 30, 2025, per Natural Resources Canada.

AirGreen × GREE

One duct system, one certified GREE system, one installer who does the math.

GREE builds the outdoor unit and the air handler. AirGreen calculates the heat loss, checks your ducts and installs the system, its line set and its electrical connection.

GREE

What GREE brings

  • Cold-climate certifiedThe R-32 systems on this page are ENERGY STAR cold climate and Most Efficient, and listed by NEEP.
  • Heat published down to −30 °CFor each tonnage NEEP publishes a maximum capacity at −30 °C: from 18,000 BTU/h at 2 tons to 27,000 BTU/h at 5 tons.
  • Leak detectionThe R-32 units have one; GREE’s manuals ask that they stay powered after installation, except during service, so it stays active.
AirGreen

What AirGreen brings

  • GREE Elite dealerGREE training completed, priority access to original parts.
  • Free estimateWe measure the rooms, calculate the heat loss and check that your ducts carry the airflow of the chosen tonnage.
  • 136 GREE central systemsGREE central heat pumps published with photos on our installations blog (count as of Oct. 14, 2026).
  • RBQ 5645-9605-01Licences 15.8, 15.10 and 16. Gas and oil work is done by a licensed partner.

The result: a tonnage chosen by calculation, a GREE system certified under its AHRI number, installed by a GREE Elite dealer.

Compare a tonnageBook my free estimate
The GREE shop

All 20 GREE central heat pumps, right below.

Each product sheet gives the AHRI number, the outdoor unit and the air handler. The R-32 systems carry their LogisVert amount; the R-410A systems have none.

GREE
Know before you buy

Deep cold, circuits, refrigerant: three things to settle before the quote.

Three panels drawn from the certificates and GREE’s documents, for all four tonnages. They prepare the visit; they do not replace the calculation made at your home.

The higher the tonnage, the smaller the share kept at −30 °C.

Maximum capacity NEEP publishes at −30 °C, as a share of the 8.3 °C rating. At that temperature the three families have the same figures, tonnage by tonnage.

2 tons18,000 of 25,000 BTU/h72%
3 tons20,400 of 34,000 BTU/h60%
4 tons26,200 of 48,000 BTU/h55%
5 tons27,000 of 54,000 BTU/h50%
  • −23 °CMontréal, January, 2.5% (NBC 2020). No GREE certificate gives a figure at this temperature.
  • −26 °CMontréal, January, 1% (NBC 2020). No certified point either.
  • −15 °CLast published point before deep cold: 96 to 100% of the rating, depending on the system.
  • −30 °CColdest point NEEP publishes for the 12 R-32 systems.

Between −15 °C and −30 °C NEEP publishes no point. We do not draw a line between the two: at −23 °C, a figure can only come from the manufacturer’s detailed tables, to be requested with the quote, and the heat-loss calculation tells what backup heat to plan.

Technician’s corner

What does not change from one family to the next.

One line-set size

Liquid 3/8 in, gas 3/4 in: the same pair of lines for all three families and all four tonnages.

GREE Comfort · GREE Canada · Dettson

Ducts sized for the airflow

760 CFM at 2 tons, 1,000 at 3, 1,200 at 4, 1,500 at 5: GREE Comfort and GREE Canada print the same airflows. The existing duct system is checked before the tonnage is set.

GREE Comfort 032725 · GREE Canada 062025

From −30 °C to 24 °C

Heating range printed in all three document families; in cooling, from −15 °C to 54 °C.

GREE Comfort · GREE Canada · Dettson
Did you know?

Five things to know before choosing a GREE central system. Flip the cards.

LogisVert · Hydro-Québec

LogisVert: the tonnage and the certificate set the amount.

$2,4722 tons, all three families: 20,600 BTU/h at −8 °C, at $120 per 1,000 BTU/h.
$3,384 · $3,9123 tons: 28,200 BTU/h at −8 °C for FXU and GUD + E, 32,600 for GUD + G.
$4,7404 tons, all three families: 39,500 BTU/h at −8 °C.
$5,4005 tons, all three families: 45,000 BTU/h at −8 °C.

What the LogisVert guide (version 1.10) accepts: a new, ENERGY STAR certified split (central) air-to-air heat pump whose outdoor unit makes at least 12,000 BTU/h in cooling. What it excludes: an air handler or ducts outside the insulation envelope (in the attic or roof space, for example), replacing a single coil or a single unit, and a home that already has a geothermal system. The amount is capped at the pre-tax cost and the claim must be filed within nine months. Amounts from the Oct. 27, 2026 list, indicative; the 8 R-410A systems are not on it.

Questions

What people ask us about GREE central heat pumps.

FLEXX ULTRA, FLEXX or UNIX: what is the difference?
Three model families for the same R-32 tonnages. FXU systems (GREE Comfort’s FLEXX ULTRA R32) have one outdoor unit per tonnage. GUD systems use two outdoor units, the GUD36W2 for 2 and 3 tons and the GUD60W2 for 4 and 5 tons, with an E air handler (Dettson calls it FLEXX R32) or a G one (GREE Canada’s UNIX R32). Each pairing has its own AHRI certificate, and they differ at 2 tons (heat at −15 °C), at 3 tons (heat at −8.3 °C) and at 4 and 5 tons (COP at 8.3 °C, HSPF2 of the 5-ton).
Does a GREE central system still heat in Montréal’s coldest weather?
NEEP certifies these systems down to −30 °C, where they still deliver at most 18,000 BTU/h (2 tons) to 27,000 BTU/h (5 tons). Between −15 °C and −30 °C no point is published: at −23 °C, Montréal’s January design temperature (National Building Code), there is no certified figure, and we do not guess one. Your home’s heat-loss calculation settles the rest, backup heat included.
Which tonnage do I need?
The one the room-by-room heat-loss calculation gives, then the one your ducts can carry: GREE Comfort and GREE Canada print 760 CFM at 2 tons, 1,000 at 3, 1,200 at 4 and 1,500 at 5 for their FXU and G air handlers. The selector at the top of the page then shows what each size is certified to do.
How much does LogisVert pay for a GREE central system?
Per Hydro-Québec’s list of Oct. 27, 2026: $2,472 at 2 tons, $3,384 or $3,912 at 3 tons depending on the certificate, $4,740 at 4 tons and $5,400 at 5 tons, never more than the pre-tax cost. The 8 R-410A systems are not on the list. These amounts stay indicative until Hydro-Québec has processed the claim.
Can I keep my gas furnace as backup heat?
Yes: Dettson lists its Flexx R32 series as dual-fuel compatible (sheet X61067C), and GREE’s manual for the GUD outdoor units states that the heat pump and the furnace never heat at the same time. Any gas work is done by a licensed partner; our RBQ licence covers the heat pump, its refrigerant lines and its electrical connection. If the furnace stays in place with a coil, see the add-on central heat pump page.
What warranty comes with a GREE central system?
It depends on the family’s document, and they do not say the same thing. GREE Comfort’s US brochure for the FXU (document 032725) prints 5 years parts and 7 years compressor; the French FXU brochure carrying TTI Climatisation’s address (document BRO0125), 10 years parts and compressor (residential). Dettson’s submittal X60062F, read Oct. 26, 2026, prints 10 years parts and compressor, labour not included, plus 2 years with registration for a purchase made at Wolseley. GREE Canada publishes no term for the UNIX R32 (brochure 062025 and product page, read Oct. 26, 2026). Before you sign, insist on the written warranty that applies to your model.
AirGreen

A house with ducts? We calculate the tonnage, then compare the three families with you.

Free estimate at home. Montréal, Laval, Longueuil, South Shore and North Shore.

Contact us514-316-2973
GREE Elite dealerGREE training completed, priority access to original parts.
136 GREE central systemsPublished with photos on our installations blog, counted on Oct. 14, 2026.
RBQ 5645-9605-01Licences 15.8, 15.10 and 16.
AHRI on every product pageThis page shows a LogisVert amount only when it matches Hydro-Québec’s list of Oct. 27, 2026.
Sources

Capacities and amounts: indicative, to be confirmed in the quote. Tool calculations: AirGreen, from the published values above. Page updated Oct. 27, 2026; NEEP records, ENERGY STAR and the LogisVert list checked again that day.